Answer:
3/4 taster; 1/4 non-taster
The likelihood that their first child will be a taster: 75 %
Explanation:
Complete dominance occurs when a dominant gene variant or 'allele' completely masks the expression of the recessive allele in heterozygous individuals (i.e., individuals carrying one copy of the dominant allele and one copy of the recessive allele). In this case, both parents are heterozygous for a single gene trait (i.e., the ability to taste) which is ruled by complete dominance. In consequence, the expected phenotypic ratio in the progeny (F1) will be:
- Alleles: T (dominant taster allele); t (recessive non-taster allele)
- Parental cross: Tt x Tt
- Punnett Square from this cross:
T t
T TT Tt
t Tt tt
Expected F1 phenotypic ratio: 3/4 taster (i.e., 1/4 TT genotype + 1/2 genotype Tt = 3/4 or 75%); 1/4 non-taster (tt genotype = 1/4 or 25%). Moroever, the chance that the first child has the taster phenotype is 3/4 (75%).
Answer:
a. inbreeding
Explanation:
Breeding two closely related species will give offspring with similar characteristics as the parents.
A statistical indication of the link between variables is a correlation. There is a cause-and-effect link between the variables; causality is the idea that changes in one variable create changes in the other. The two variables have a causal relationship as well as a correlation with one another.
What is causal relationship?
If the occurrence of one event results in the other, then there is a causal relationship between the two. The first incident is referred to as the cause, and the second incident as the effect. Two factors may correlate, but that does not prove one caused the other. On the other hand, two variables must be correlated if there is a causal connection between them.
According to a study, there is a link between a student's test-day anxiety and test results that is unfavorable. We cannot, however, conclude that test anxiety is to blame for a student's worse performance because there may be other factors at play, such as poor study habits. In this case, correlation does not prove causality.
For more information regarding causal relationship, visit:
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Answer:
B. Selenium
Explanation:
it can be related to oxygen and they can combine
